Academia.edu shows academics around the world structured in a 'tree' format, displayed according to their departmental and institutional affiliations. It enables academics to see news on the latest research in their area - the latest people, papers and talks.
We are hoping that Academia.edu will eventually list every academic in the world -- Faculty Members, Post-Docs, Graduate Students, and Independent Researchers. Academics can add their departments, and themselves, to the tree by clicking on the boxes.